Five problems related to ignition module have been reported for the 1999 Volvo S80. The most recently reported issues are listed below.
Vehicle surges in rpm while driving,vehicle started by no acceleration warning light on engine malfunction. Shut off while driving.
Re:1999, s-80,t-6 Volvo. Saw an ap article in my local paper today re complaint investigation. I experienced virtually all of the same problems cited in the article. Namely stall w/o warning, from a stop,step on gas and barely would move(like slipping clutch on a manual transmission) , had numerous incidents where I felt vulnerable and unsafe in traffic, loss of power steering etc. Sounds very much like these other complaints. At same time I had lots of incorrect "readouts" on dash panel. I complained to dealer who said this all could be related to the abs control module which was replaced at cost of $825. 00. Old part was not given back to me. Of note is that during the same repair a belt was replaced which they did give back to me, but not the module. Mileage was only 61,376. This module did solve the problem however I am now getting another goofy readout that dealer says could be a defective module. Current mileage is 61779. I did not think that failures of this type should occur at such low mileage. At the time I asked if there was a recall for this and was told no. I am not happy with this situation and ii do suspicion that a defect exists.
The contact owns a 1999 Volvo S80. While driving 40 mph, the vehicle began to slow down and the abs and engine indicators illuminated on the instrument panel. The vehicle was taken to the dealer and they stated that the trollis system needed to be replaced. The vehicle was repaired, but the failure recurred two weeks later. The vehicle was taken to the dealer again and they stated that the central module needed to be replaced. The vehicle was repaired. The manufacturer stated that the vehicle needed to be taken back to the dealer for further inspection. The failure mileage was 60,000 and current mileage was 97,000. Updated 1/8/09 the ball joint needed to be replaced, the heating system, throttle systems, engine cooling fan and the master cylinder all failed. The vehicle would accelerated on its own. The vehicle stalled on several occasions. The steering made a noise when it was turned. The dealer lubricated the steering. The dealer stated the vehicle needed an O2 sensor. The ignition switch was replaced. The inner tie rods were replaced. 01/14/09.
Had taken my S80 to the Volvo dealership a number of times complaining of engine hesitation and stalling. Volvo"s diagnostic computer system "vadis" output codes clearly showed default codes indicating a faulty module. The service manager at this steadfastly refused to replace the module "due to cost". I warned him of the potential consequences of trying to operate this vehicle with unreliable engine firing and the associated "stalling" that occurs without warning. I expressed my concerns to him about the danger that this problem presented for me and other vehicles which I had experienced during previous "stallings". Unfortunately, after tremendous research and a number of phone calls before I could bring this info to bear to force the dealership to honor their warranty I experienced a "stalling" event while driving on the expressway which lead to a single car accident,resulting in a total loss of my car.
Computer failed excessively resulting in intermittent working of sunroof/ air conditioning, and power windows. Also vehicle stalled frequently.